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Peter Koek's Discussions

Altitude hold rocketing into the sky: barometer broken?

Started this discussion. Last reply by Zedtwitz Aug 17, 2013. 14 Replies

I went out and try the altitude hold mode with the LV-EZ0 ultrasonic sensor over a grass field. It worked like a dream up to about 3-4 meters, maybe some hiccups here and there, but very smooth…Continue

Tags: rocket, barometer, hold, altitude, APM1

Optical flow not used in stabilization

Started Jun 19, 2013 0 Replies

I am using the APM 1.0 board with firmware version 2.9.1b. I ran this test in altitude hold mode using an ultrasonic sensor. I have enabled the INERTIAL_NAV_XY definition (default disabled),…Continue

Tags: hold, ADNS3080, position, flow, optical

Analog ports 0 to 5 free on APM 1?

Started this discussion. Last reply by Thomas J Coyle III Mar 20, 2013. 1 Reply

Can I use analog 0 to 5 of the APM 1 that are located close to the USB freely or are they already in use? The expansion ports (analog 6 and 7) aren't enough to connect all my sensors.I did notice …Continue

Tags: Expansion, Port, Sensor, Analog, 1

New parameters from custom sensor readings

Started Mar 8, 2013 0 Replies

I am planning on using the two expansion ports on the APM 1 board of the arducopter. I know I can use MAVLink to generate messages specific to these sensors and send them to ground control.How do I…Continue

 

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Latest Activity

Marshall Wentworth replied to Peter Koek's discussion Altitude hold rocketing into the sky: barometer broken?
"Yeah, it's a good way to reduce vibrations. Attaching it directly to the frame is also pretty good, from what I've read. I have mine sitting on 4 foam ear plugs and zip tied down, and the vibrations are pretty minimal. Other materials like…"
Aug 1, 2013
Peter Koek replied to Peter Koek's discussion Altitude hold rocketing into the sky: barometer broken?
"This is something I haven't tried yet. I am not able to try it any time soon but I will definitely keep it in mind.  Is it normal to put the APM on foam though? I don't have logs of the event."
Aug 1, 2013
L-P Lorentzen replied to Peter Koek's discussion Altitude hold rocketing into the sky: barometer broken?
"I used the foam as vibration-isolation. When I got put the APM on top of the foam the Quad stopped rocketing and staid in loither.."
Aug 1, 2013
Marshall Wentworth replied to Peter Koek's discussion Altitude hold rocketing into the sky: barometer broken?
"Do you have any logs of it doing this?"
Aug 1, 2013
Peter Koek replied to Peter Koek's discussion Altitude hold rocketing into the sky: barometer broken?
"I am already using the power filter, but the sonar was working fine anyway. It does not rocket up into the sky when I switch to alt hold. It rockets up when I exceed a certain altitude, which is about the height that it switches from sonar to…"
Aug 1, 2013
Peter Koek replied to Peter Koek's discussion Altitude hold rocketing into the sky: barometer broken?
"It is covered with a piece of foam. The problem lies elsewhere."
Aug 1, 2013
L-P Lorentzen replied to Peter Koek's discussion Altitude hold rocketing into the sky: barometer broken?
"I had this problem with my APM1 (do not have a LV-EZ0 ultrasonic sensor). When I tried to put it in alt_hold or loiter it rockeded in to the sky. I tried a lot of things, and the thing that worked was putting the APM on foam. The rip-away sort you…"
Jul 31, 2013
Marshall Wentworth replied to Peter Koek's discussion Altitude hold rocketing into the sky: barometer broken?
"also, you could try making a connector like the one shown under "conducted electrical noise" in this link. I did that and it really helped reduce sonar noise. http://maxbotix.com/articles/067.htm"
Jul 30, 2013
Marshall Wentworth replied to Peter Koek's discussion Altitude hold rocketing into the sky: barometer broken?
"I am currently having the same issue. If you look under advanced parameters, there is a setting for throttle_mid and trim_throttle. You're going to want these to be essentially the same. Your throttle_trim is going to be calculated by the APM…"
Jul 30, 2013
Peter Koek replied to Peter Koek's discussion Altitude hold rocketing into the sky: barometer broken?
"That might be the case but that is not what is happening. I enable altitude hold mode in at a stable height. When I then increase its height in alt hold, it rockets up into the sky and won't come back unless I switch back to stabilize."
Jul 4, 2013
Springfield Harrison replied to Peter Koek's discussion Altitude hold rocketing into the sky: barometer broken?
"If I understand the instructions correctly, altitude hold does not actually hold an altitude.  I believe it invokes a constant throttle setting instead.  So that if the copter is in stable hover, that will be maintained but if it is…"
Jun 27, 2013
Peter Koek posted discussions
Jun 19, 2013
Peter Koek replied to Randy's discussion ArduCopter-3.0 ready for wider use
"I have programmed my APM 1 with version 3.0.0 through Arduino and performed a factory reset. All is well, until I enable the optical flow sensor in mission planner, after which the helicopter simply stops responding to a regular connect. It's a…"
Jun 19, 2013

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Thomas J Coyle III replied to Peter Koek's discussion Analog ports 0 to 5 free on APM 1?
"@Peter, I believe that you can use the Atmel processor ADC inputs on the APM1.x/Oilpan as the ArduRover2 code is using ADC A(0) for the IR sensor input for obstacle detection. However, since you are stating that expansion port"
Mar 20, 2013
Peter Koek posted a discussion

Analog ports 0 to 5 free on APM 1?

Can I use analog 0 to 5 of the APM 1 that are located close to the USB freely or are they already in use? The expansion ports (analog 6 and 7) aren't enough to connect all my sensors.I did notice this wiki page about battery measurements that uses analog 0 or in case of the special sensor analog 0 and 1. I couldn't find anything about the other ports.See More
Mar 20, 2013
Peter Koek replied to Altaf's discussion Obstacle avoidance using Infra Red Sensors
"How did you connect the 4 sensors to the APM. Are you using APM 1 or 2?"
Mar 20, 2013

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Please tell us a bit about your UAV interest
I'm an electrical engineering student currently working on his bachelor project about implementing RL into a arducopter.

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